Unit 1 Quiz

• x = 30

• x = 13

• x = 7

• x = 3.33

• +, -

• -, x

Which property of equality would you use to solve the equation 14x = 56?

• Addition Property of Equality

• Subtraction Property of Equality

• Division Property of Equality

• Multiplication Property of Equality

The objective when solving an equation is to....

• isolate the variable.
• check the solution.
• guess and check.
• Combine Like Terms.

x - 32 = 49

• x = 17
• x = 71
• x = 81
• x = 49

3c + 5 = 23

• c = 3
• c = 6
• c = 7
• c = 18

2.     2x + 6 = 14

• x = 4
• x = 10
• x = -4
• x = 3

6.    -3x + 5 = -13

• x = -5
• x = 2
• x = -6
• x = 6

Evaluate when x = 2 and y = 5:
2 + (12 - 5x) ⋅ 2y

• 22
• 40
• 142
• -86

What do we call a letter in math that represents an unknown number?

• Coefficient
• Variable
• Term
• Expression